The following endgame, from Almasi vs Sanikidze, is becoming a real riddle. The position, after the 43th move by Almasi, is the following:
[fen "8/1N4k1/7p/4ppbP/4P3/1PP5/1K6/8 b - - 0 1"]
White King on b2 Knight on b7 pawns on b3 c3 e4 h5. Black to move King on g7 Bishop on g5 pawns on e5 f5 h6. Black to move.
Even on lichess.com evaluation goes up and down as far as depth 43(!) without reaching a clear verdict. With perfect play, is a win for White or a draw?